Tootfinder

Do we still live in a world of U.S. hegemony?
Is it a bipolar or multipolar world?
Or are states no longer the globe’s key actors?
Do we instead live in an age of “technopolarity,”
where corporate titans
such as Amazon, Apple, Google, Meta,
and billionaire Elon Musk are the new great powers?

New Books Offer Divergent Takes on Sources of Internet Power
Cyberspace has upended the old world order.

Radio polarisation of millisecond pulsars with multipolar magnetic fields
Ankan Sur, Yajie Yuan, Alexander Philippov
https://arxiv.org/abs/2402.11474 https…

Radio polarisation of millisecond pulsars with multipolar magnetic fields
NICER has observed a few millisecond pulsars where the geometry of the X-ray emitting hotspots on the neutron star is analyzed in order to constrain the mass and radius from X-ray light curve modeling. One example, PSR J0030+0451, is shown to possibly have significant multipolar magnetic fields at the stellar surface. Using force-free simulations of the magnetosphere structure, it has been shown that the radio, X-ray, and gamma-ray light curves can be modeled simultaneously with appropriate fie…

Altermagnetism and superconductivity in a multiorbital t-J model
Anjishnu Bose, Samuel Vadnais, Arun Paramekanti
https://arxiv.org/abs/2403.17050 https://<…

Altermagnetism and superconductivity in a multiorbital t-J model
Motivated by exploring doped multi-orbital antiferromagnets (AFMs) and altermagnets (ALMs) we explore minimal $t$-$J$ models on the square-octagon lattice which favor such collinear magnetic orders in the regime where spin exchange dominates. While the AFM order breaks translational and time-reversal symmetries, the ALM state (equivalently, a `$d$-wave ferromagnet') features multipolar order which separately breaks time-reversal and crystal rotation symmetries but preserves their product leadin…

This https://arxiv.org/abs/2309.02081 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Quadrupolar radiation in de Sitter: Displacement memory and Bondi metric
We obtain the closed form expression for the metric perturbation around de Sitter spacetime generated by a matter source below Hubble scale both in generalized harmonic gauge and in Bondi gauge up to quadrupolar order in the multipolar expansion, including both parities (i.e. both mass and current quadrupoles). We demonstrate that such a source causes a displacement memory effect close to future infinity that originates, in the even-parity sector, from a $Λ$-BMS transition between the two non-…

Radio polarisation of millisecond pulsars with multipolar magnetic fields
Ankan Sur, Yajie Yuan, Alexander Philippov
https://arxiv.org/abs/2402.11474 https…

Radio polarisation of millisecond pulsars with multipolar magnetic fields
NICER has observed a few millisecond pulsars where the geometry of the X-ray emitting hotspots on the neutron star is analyzed in order to constrain the mass and radius from X-ray light curve modeling. One example, PSR J0030+0451, is shown to possibly have significant multipolar magnetic fields at the stellar surface. Using force-free simulations of the magnetosphere structure, it has been shown that the radio, X-ray, and gamma-ray light curves can be modeled simultaneously with appropriate fie…

Wichtige Einordnung:
@…: @… ruft an ... wegen #RKIFiles
TL;DH: Den großen Skandal, den die Querdullus konstruieren wollen…

Was steckt wirklich in den Corona-Protokollen? | Übermedien
Die Veröffentlichung interner RKI-Protokolle durch das Magazin "Multipolar" sorgt für neue Debatten um die Pandemiepolitik. Neben der möglichen inhaltlichen Brisanz der Dokumente geht es nun auch um die Frage, warum sich eigentlich etablierte Medien nicht an solche Recherchen gewagt haben.

Multipolar opinion evolution in biased networks
Luka Bakovi\'c, David Ohlin, Giacomo Como, Emma Tegling
https://arxiv.org/abs/2403.03913 https://

Multipolar opinion evolution in biased networks
Motivated by empirical research on bias and opinion formation, we introduce a novel multidimensional nonlinear opinion dynamical model where agents have individual biases, which are fixed, as well as opinions, which evolve. The dimensions are coupled through a normalization step, which is also the source of the nonlinearity, so that the state describes an agent's relative opinion of various options. This can capture, for example, an individual's relative trust in different media. In special cas…

A phase-resolved Fermi-LAT analysis of the mode-changing pulsar PSR J2021 4026 shows hints of a multipolar magnetosphere
A. Fiori, M. Razzano, A. K. Harding, M. Kerr, R. P. Mignani, P. M. Saz Parkinson
https://arxiv.org/abs/2403.07649

A phase-resolved Fermi-LAT analysis of the mode-changing pulsar PSR J2021+4026 shows hints of a multipolar magnetosphere
The goal of our work is to study the mode changes of the radio-quiet gamma-ray pulsar PSR J2021+4026 with improved detail. By accurately characterizing variations in the gamma-ray spectrum and pulse profile, we aim to relate the Fermi-LAT observations to theoretical models and interpret the mode changes in terms of variations in the structure of a multipolar dissipative magnetosphere. We continually monitored the rotational evolution and the gamma-ray flux of PSR J2021+4026 using more than 13 y…

Wichtige Einordnung:
@…: @… ruft an ... wegen #RKIFiles
TL;DH: Den großen Skandal, den die Querdullus konstruieren wollen…

Was steckt wirklich in den Corona-Protokollen? | Übermedien
Die Veröffentlichung interner RKI-Protokolle durch das Magazin "Multipolar" sorgt für neue Debatten um die Pandemiepolitik. Neben der möglichen inhaltlichen Brisanz der Dokumente geht es nun auch um die Frage, warum sich eigentlich etablierte Medien nicht an solche Recherchen gewagt haben.

This https://arxiv.org/abs/2402.11474 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Radio polarization of millisecond pulsars with multipolar magnetic fields
NICER has observed a few millisecond pulsars where the geometry of the X-ray emitting hotspots on the neutron star is analyzed in order to constrain the mass and radius from X-ray light curve modeling. One example, PSR J0030+0451, is shown to possibly have significant multipolar magnetic fields at the stellar surface. Using force-free simulations of the magnetosphere structure, it has been shown that the radio, X-ray, and gamma-ray light curves can be modeled simultaneously with appropriate fie…